# Thermo vs Thermometer Log

The clearest difference is review sentiment: Thermometer Log at 50% against Thermo's 5%. Thermometer Log also leads on rating (4.8 vs 3.6). Thermo's advantage is ratings volume (98 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Thermo sells 8 in-app purchases, starting at $10.99 per month and Thermometer Log sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Thermometer Log holds the better App Store score, 4.8 against 3.6. That said, the two scores are not equally well evidenced: Thermo has 98 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 5% of Thermo's written reviews are positive against 50% of Thermometer Log's.

Thermo ships an update monthly, Thermometer Log every 2 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Thermo | Thermometer Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (98 ratings)](https://appshunter.io/ios/app/thermo-temperature-check-in/id1046767441/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/thermometer-log/id1546929547/reviews)** |
| Number of ratings | **98** | 6 |
| Positive reviews | 5.2% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 90 MB | 6 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Daily Discovers](https://appshunter.io/developer/1408603176) | [Kei Suefuji](https://appshunter.io/developer/1388335881) |

## What reviewers say

### Thermo

[App page](https://appshunter.io/ios/app/thermo-temperature-check-in/id1046767441)

Easily track family health by logging temperature changes and other vital signs. Create individual profiles to monitor each person's well-being over time with helpful charts and graphs. Set personalized reminders for consistent tracking and utilize voice input for added convenience.

**Highlights:** Family health tracking, Individual profiles, Temperature logging, Health dynamic graphs, Personalized reminders, Voice input, Apple Watch sync

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thermo  - 1 Month no trial | $10.99 | per month |
| Thermo Premium | $12.99 | per month |
| Thermo Premium - 1 month | $12.99 | per month |
| Thermo - Digital Wellness | $18.99 | per 3 months |
| Thermo - Digital Wellness + | $19.99 | per month |
| Thermo Plus - 12 months | $27.99 | per year |
| 3 months subscription | $39.99 | per 3 months |
| 3 Month Subscription | $59.99 | per 3 months |


### Thermometer Log

[App page](https://appshunter.io/ios/app/thermometer-log/id1546929547)

Easily record and track your body temperature with this intuitive app. View historical data, analyze trends with graphs, and export your records. Supports both Celsius and Fahrenheit units.

**Highlights:** Easy temperature recording, Celsius and Fahrenheit support, Weekly, monthly, and 3-month graphs, Average temperature display, Data correction and addition, CSV export

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PREMIUM | $4.99 | one-time |


## Frequently asked questions

### Is Thermo free?

Thermo is free to download, with in-app purchases available.

### Is Thermometer Log free?

Thermometer Log is free to download, with in-app purchases available.

### Which has better reviews, Thermo or Thermometer Log?

Thermometer Log is rated higher. Thermo averages 3.6 out of 5 from 98 ratings, while Thermometer Log averages 4.8 from 6 ratings.

### Do Thermo or Thermometer Log have ads?

Both Thermo and Thermometer Log show ads.

### Which is updated more often, Thermo or Thermometer Log?

Thermo ships an update monthly, and Thermometer Log every 2 months. Most recently, Thermo was updated on October 26, 2026 and Thermometer Log on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*